Carburetor



Patented Au'g. 1.6, 1927,'

UNITED s'lxxrlezs ALBERT E, WEAVER, F INDIANAPOLIS,

INDIANA, ASSIGNOB, BY MESNE ASSIGN- MENTS, 'To IRA T. swAItTz, TRUSTEE, or INDIANAPOLIS, INDIANA.

oAnBUnETon.

Application led June 15, 19201 Serial No. `589,155.

manner to the best advantage and lowestl possible cost and by which all of the fuel,

value of the hydro-carbon liquids employed will be utilized including the vapors o r fixed gas given off by any body of hydro-carbon l1qu1d, all as will be hereinafter more fully described and claimed. Referrlngto the accompanying drawings,

l5 which are made a part hereof and on which similar reference characters indicate similar parts,

Figure 1 is a vertical sectional view through an apparatus for carrying out my i l0 said invention, and A Figure 2 a detail elevation of the adjustable valve-operating cam;

Said/apparatus 1n some respects resembles in its constructlon and operation a carbu-l retor or carbureting apparatus and, in fact,

the.- apparatus shown is adapted and intendedfor use as a carburetor'for automobilesyor invsupplying an explosive mixture l for the operation of internal combustion en gines.l s "l In said drawings, the portions marked A representa bowl or liquidfuel containin chamber, B a gas or vaporizing chamber, ya gas dome, and D a water tank. i

The body or bowl A is preferably a hollow casting of appropriate size and shape fand 'has an auxiliary air tube 10 connected A g with an aperture 1n one side thereof and eX- tending from said aperture in a horizontal direction to the center of the chamber andl then in a vertical direction through to the top of vaporizing chamber B, its upper end being seated in a central perforation inthe top plate 11. Attached to the outer end of tube 10 is a valve chamber 12 provided with ari-adjustable valve 13 for controlling the p inflow of the air through said auxiliary pipe. Said valve v13 rests on a stem 14 which'in turn is mounted in a nut threaded opening in the lower end of the casing forming the chamber 12- and a lock nut 15 is provided for securing the stem 14 in fixed osit-ion. The valve 13 is perforated and sli es over a stem 16 mounted in a screw-threaded boss Il 17 in the upper end of the casing. The

Yadapted to supply being secured togetherby clamping bolts 25 upper end 18 ofv said stem 16 is screwthreaded'and a coiled spring 19 is interposed between the valve 13 and a. Ishoulder upon the upper end of. stem 16. The adjustment of saidstem 16 through the medium of its screw-threaded portion 18 serves to regulate the tension of said spring 19 and thus control the resistance to the suction of the engine. By. the other adjustment the normal low speed position of the valve' may be fixed. j An airl inletipe 2O leads from. the upper end of tank to communicate with the lower portion of bowl or chamber A.

A liquid fuel supply pipe 21 leading from any 'supply tank 'appropriately located is the 'fuel tosaid chamber or bowl A. The milow of fuel .from pipe 2l is controlled by a needle valve 22 operated by a float 23 pivoted at 24 and connected with said needle valve in a usual manner.

' The chamber B is preferably a` glass cylindermounted on the upper end of bowl'A and provided with a top plate 11, the parts as shown'. Gaskets 26 and 27 are inter osed in the joints at the respective ends oPsaid cylinder B to insure against any gas leakagethrough said joints. y

A series of. frusta 28 formed of wire gauze, preferably copper, -or other reticulated material are' mounted in chamber B superimposed one above another. YA series of perforations 29 are formed in the u per end of tube 10 through which gases rom chamber B may pass into said tube. A wire auze cone 30 is mounted in the'upper end of said tube 10, the pointed enddependmg for a considerable distance into said tube.

The dome is appropriately mounted on a '95 collar surrounding the central -aperture `1n plate Q11 and its upper end is formed with a collar or plate 31 by which it ma be conv nected to the' intake manifold of e engine A or to any pipe for leading the gas to the 100 'oint where it is to be used.. A valve 32 which may be egg-shaped, or of a streamline form, ass'hown, or of any appropriate form, is mounted in the aperture leading from said dome C to the exit. I prefer the 1.05

form of valve shown, and it has a stem 33 on its u per end and a stem 34 ony-itsvlower end, eac of which is adapted to slide in an aperture in a spider-like support provided one at the lower end of the dome and the diminish or close the passage around saidf valve.

A valve 40 is provided in the upper 'end of air pipe 20 for controlling the inflow of air through said pipe and said valve is adapted to be adjusted by means of a cam 41 which is also mounted on shaft 381 and adapted to be operated thereby. The operative faceof said cam is adjustable by the set-screws 41 and the top of the valve stem rests against said surface so that the normal position of the valve may be regulated as desired.

The water tank D may or may not be used, as preferred. but I find by its use improved results may be obtained and therefore regard it as an important feature of the apparatus, although realizing that it is not absolutely essential to its successful operation. Said tank is preferably mounted as indicated and has an air pipe 42 leading into the bottom thereof, Said tank may be filled with water to any appropriate level so that the air utilized will be bubbled through said water and will carry with it into the mixture a large supply of moisture.

In an apparatus such as described it will be understood that when the engine is in` operation the more volatile portion of the fuel will be continually taken out as fresh fuel is added, thereby leaving the heavier and less volatile portion for discharge through the perforations 46 into the tube 45. In order to insure the utilization of all por- 'tions ofthe liquid hydro-carbon, I provide a central tube 45 having perforations 46 within its lower end in chamber A which tube extends through a 'boss 47 at the elbow in tube 10and for a considerable distance upwardly inside said tube 10 terminating in an atomizin'g head formed with atomizing perforations 48 and covered by a ne wire gauze cone 49. A needle valve 50 controlled by a hand-wheel 51 is provided to adjust the outlet by said needle valve throughl said atomizing perforations. i

The apparatus being assembled and connected with an internal combustion engine and arranged as shown, the operation is as follows:

The bowl A being filled to substantially the level indicated with fuel, the fixed gases in the form of vapor rise from the surfa ce of the u per and `more volatile portion of said fuel lling the chamber B with such fixed gases. j The aperture leading into auxiliary Vvalve chamber 12 is preferably closed by the -chamber 12 is opened and the suction of the engine operates to draw the air 'through said auxiliary chamber and pipe 10 and also through pipe 20 and thev body of fuel contained in chamber A. The air coming through pipe 20 first passes through the -water in tank D andis humidified. The

valve 40 `is adjusted before the operation begins to insure the quantity of air desired and as the valve 32 is adjustedpifor high speed or low speed valve 40 will be corre spondingly adjusted to insure greater or less incoming air. The greater quantityis required when the valve is open for'high speed purposes in order to createl a more active agitation ofthe liquid fuel in chamber Aanda more rapid vaporization and .conversion thereof into fixed gases commingling and combinmg with the humidiiied air sucked in through said -pipe 20. At the same time the air under cont-rol of valve 13 coming through auxlhary pipe 10 draws the heavier or less volatile portion of the liquid' fuel through perforations 46 into tube 45 and out through the jet openings 48 in the atomizer-head at the upper end of said tube 45, the flow ofsaid heavier fuel being controlledv by the adjustment of needle valve 50. The product formed by the mixture coming through said atomizer head and the auxiliary tube 10 commingle with the gases coming through the apertures 29 from the upper end of,

chamber B `and pass'through the fine wire mesh of cone 30 Vand become throughly commingled, forming a combustible gas. The frusta 28 in chamber B serve lto more readily break up the vapor and cause all particles thereof to thoroughly mix and comminglc with incoming air so that when the resulting gases reach the4 upper end and pass through perforations 29 the various constituent'V elements are thoroughly commingled and combined. i Y, l

By this means and through .the various vvadjustments described, an apparatus -is roreason of the auxiliary tube 45 leading from Y the bottom of the chamber A into the auxiliary air inlet 10, the less volatile portions of the fuel are likewise brought into the mixture and all ortions of the fuelI are thus completely ut' zed.

If preferred, the air supplied tothe auxiliary air chamber l2 may be first heated in any appropriate manner andthe heat thus rovided further utilized to insure the perect vaporization of the` heavier portions of the liquid. 1

I-Iaving thus fully described my said invention what I claim as-new and desire to secure by Letters Patent is:

l. An apparatus for forming' a combustible gas from liquid hydro-carbon fuel comprising a. fuel containing chamber, a fuel supply,'a,iloat controlled valve for regulating and maintaining a,predetermined level 'in said fuel containing chamber, a Vaporizing chamber above said fuel containing chamber, a valve controlling the outlet, an

air supply leading to the lower portion ofA said' fuel containing chamber, `a valve for regulating the air passing through said air and means for controlling the valve Supply gas dome and the valve leading from the for controlling the supplv of air,

stantially as set forth.

2.' An apparatus forforming combustible gas from liquid hydro-carbon comprising a liquid fuel containing chamber, means for supplyin said chamber with liquid fuel, an

air vsupp y said chamber, a valve for regu ating the air su p air supply, vaporizing chamber, a valve for regulating theexit from said vaporizing chamber, means for adjusting said valve, and a connection between the same means land the air controlling means whereby the air .is regulated so that itssupply wi1l be properly' roportioned to the consumption of gas, su stantlally-as set forth. y 3. An apparatus for forming combustible gas com rising a liquid fuel chamber, an y pipe leading into vthe .lower part of sai chamber, a vaporizing chamber above the fuel, a tube leading from the lower partfuel chamber mto an auxiliary an' tube, an atomizinghead onsaid tube within,v

of said said auxiliary air tube, a gauze cone covering said atomizing head, an `auxiliary air valve controlling the'flow of air` through said auxiliary ai-r tube, amiXing'chamber, and means for-'controlling the outflowr of gas', substantially as set forth. 1

4, An'apparatus forA forming combustible whereby both valves are operated simultaneously, subleading to the lower ortion of uel chamber, an air pipe communicatmgwith the lower part of said chamber, a vaporizing chamber above the fuel,-a central auxiliary air pipe communicating at its upper end with said vaporizinfr chamber, a screen cone of comparatively xarge surface mounted ytherein for preventing the passage of anything but vapor or gas, means 'for controlling theliow. of air through said auxiliary air tube, and means for controlling the flow of gas from said apparatus, substantially asset forth. y i

5.` A carburetor comprising a fuel chamber,an air passage leading through said fuel chamber and having passages forming communication with the fuel chamber above the normal. level of the fuel, a spray nozzle ex-` `tendmgv into said air passage and having 6. A` carburetor comprising a ber, an air passage leading through said fuelchamber and having assages forming communication with the el chamber above the normal level of the fuel, a spray nozzle 'extending into said air assage and having communication with t e fuel vin Vthe fuel chamber adjacent the bottom of the same, means for admitting air into the fuel chamber beneath the level of the fuel said air passage and passages formin communication with the fuel chamber a ove the level of the fuel being open at all times tothe suction ofthe engine, a valve movable axially of the air passage for controlling the discharge of fuel from said carburetor, a

rack on said valve, Y.and a pinion engagingsaid rack for 'moving the valve to permit a larger or smaller amount offuel to pass by the same, substantiall as' set forth.

` In witness whereo I vhave hereunto setl my hand at Indianapolis, Indiana, this 3rd day of` June, A. nineteenhundred and twenty.

` ALBERT E. WEAVER. 

